OK, so the classic Rubik’s Cube wasn’t particularly difficult once you knew the patterns. Rubik’s Revenge (A 4×4 cube) was significantly harder. But I have no idea what to make of this:

Magic Cube 4D

If that weren’t brain-twisting enough, how about a Rubik’s Cube with five dimensions? And three people have actually solved it – I can only imagine what kind of mutants they are.